/*
* Copyright (C) 2008 Ben Skeggs.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"
#include "nouveau_abi16.h"
#include "nouveau_ttm.h"
#include "nouveau_gem.h"
void
nouveau_gem_object_del(struct drm_gem_object *gem)
{
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct ttm_buffer_object *bo = &nvbo->bo;
struct device *dev = drm->dev->dev;
int ret;
ret = pm_runtime_get_sync(dev);
if (WARN_ON(ret < 0 && ret != -EACCES))
return;
if (gem->import_attach)
drm_prime_gem_destroy(gem, nvbo->bo.sg);
drm_gem_object_release(gem);
/* reset filp so nouveau_bo_del_ttm() can test for it */
gem->filp = NULL;
ttm_bo_unref(&bo);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
}
int
nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct nvkm_vma *vma;
struct device *dev = drm->dev->dev;
int ret;
if (!cli->vm)
return 0;
ret = ttm_bo_reserve(&nvbo->bo, false, false, false, NULL);
if (ret)
return ret;
vma = nouveau_bo_vma_find(nvbo, cli->vm);
if (!vma) {
vma = kzalloc(sizeof(*vma), GFP_KERNEL);
if (!vma) {
ret = -ENOMEM;
goto out;
}
ret = pm_runtime_get_sync(dev);
if (ret < 0 && ret != -EACCES)
goto out;
ret = nouveau_bo_vma_add(nvbo, cli->vm, vma);
if (ret)
kfree(vma);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
} else {
vma->refcount++;
}
out:
ttm_bo_unreserve(&nvbo->bo);
return ret;
}
static void
nouveau_gem_object_delete(void *data)
{
struct nvkm_vma *vma = data;
nvkm_vm_unmap(vma);
nvkm_vm_put(vma);
kfree(vma);
}
static void
nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nvkm_vma *vma)
{
const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
struct reservation_object *resv = nvbo->bo.resv;
struct reservation_object_list *fobj;
struct fence *fence = NULL;
fobj = reservation_object_get_list(resv);
list_del(&vma->head);
if (fobj && fobj->shared_count > 1)
ttm_bo_wait(&nvbo->bo, true, false, false);
else if (fobj && fobj->shared_count == 1)
fence = rcu_dereference_protected(fobj->shared[0],
reservation_object_held(resv));
else
fence = reservation_object_get_excl(nvbo->bo.resv);
if (fence && mapped) {
nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
} else {
if (mapped)
nvkm_vm_unmap(vma);
nvkm_vm_put(vma);
kfree(vma);
}
}
void
nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct device *dev = drm->dev->dev;
struct nvkm_vma *vma;
int ret;
if (!cli->vm)
return